If you need a VPN only for websites in one browser, an extension may be convenient. If other browsers and apps should use the VPN too, you will usually need a device VPN client. The word “VPN” on a button proves very little, so check how the particular product works.
What a browser extension can do
An extension works inside the browser and may change its proxy settings. A proxy is an intermediate server: the browser sends a request to it, and it contacts the website. Another browser, messenger, game or updater may keep connecting directly.
Extensions differ. Some handle only web traffic. Others are simply a control for an installed device app. Look for a direct answer in the product documentation: which programs and types of traffic use the connection?
Before installation, check the publisher, update date and requested permissions. “Read and change data on all websites” is broad access, so the extension should clearly explain why it needs it.
What a device app can do
A VPN app usually creates a system connection. It can carry traffic from different apps instead of only open browser tabs. Exceptions still exist: split tunnelling can leave selected apps outside the VPN.
Choose an app when one connection should cover your browser, email and other programs. Choose an extension for a narrow task in one browser. Sensitive accounts still need HTTPS, a strong password and an extra sign-in check.
Decide in one minute
- List the apps that should use the VPN.
- Check the product's documented coverage.
- Connect, then confirm that the apps you need still work.
- Do not treat an icon as proof of anonymity—read what a VPN protects and what it does not.
If you are comparing technologies, continue with VPN vs proxy in plain English.
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